JP5786552B2 - Riding mower - Google Patents

Description

  The present invention relates to a riding mower that performs a mowing operation, a mowing operation, and the like by connecting a grass collecting container for collecting mowing grass to a rear portion of a vehicle body.

  Conventionally, for example, a mower described in Patent Document 1 has been proposed as a riding mower that performs an operation of cutting grass and grass.

  According to the description of Patent Document 1, this conventional mower has a pair of left and right steering wheels 1 and 1 and a pair of left and right rear wheels 2 and 2 as shown in FIG. It is configured to run on its own.

  Further, this conventional mower has a passenger-type self-propelled vehicle having a driving unit equipped with a driver seat 3 provided at the rear of the vehicle body, and a support frame 31 at the rear part of the body frame 4 of the self-propelled vehicle. And a mowing grass collecting device 30 equipped with a grass collecting container 32 supported in this manner. Further, a mowing apparatus 20 is provided that is connected via a link mechanism 10 between the front and rear wheels of the body frame 4 of the self-propelled vehicle.

  This conventional mower includes an engine 5 provided at the front of the vehicle body frame 4 and a power take-off mechanism 6 provided below the engine 5. In the power take-off mechanism 6, the output from the output shaft 5a facing the front of the vehicle body of the engine 5 is transmitted to the input shaft 6a via the transmission belt 9, and the driving force of the input shaft 6a is transmitted from the output shaft 6b to the rotation transmission shaft 7. This is transmitted to the cutting blade driving mechanism 22 located on the upper surface side of the cutting blade housing 21 of the grass cutting device 20.

  The link mechanism 10 includes a pair of left and right front swing links 11, 11 supported on the vehicle body frame 4 so as to swing up and down, and a pair of left and right rear swing links 12 supported on the vehicle body frame 4 so as to swing up and down. 12 and a pair of left and right interlocking links 13 and 13.

  The front ends of the pair of left and right front swing links 11, 11 are connected to a front connecting member 23 located at the front part of the cutting blade housing 21 of the mowing device 20. The front ends of the pair of left and right rear swing links 12, 12 are connected to a rear connection member 24 located at the rear of the cutting blade housing 21. The left interlocking link 13 interlocks the left front swing link 11 and the rear swing link 12, and the right interlock link 13 interlocks the right front swing link 11 and the rear swing link 12. Yes. The pair of left and right front swing links 11, 11 are interlocked by a single rotation support shaft 14. A lift cylinder 15 is linked to the left front swing link 11.

  That is, the link mechanism 10 is swung up and down with respect to the vehicle body frame 4 by swinging the front swing link 11 by the lift cylinder 15, and supports the mowing device 20 on the front and rear sides of the cutting blade housing 21. The lowered ground gauge wheel 25 is brought into contact with the ground, and is moved up and down, and each ground gauge wheel 25 is lifted from the ground and is not lifted.

  When the self-propelled vehicle is driven with the mowing device 20 in the descending operation state, the mowing device 20 cuts the cutting blades 26 positioned in the horizontal direction of the cutting blade housing inside the cutting blade housing 21 by the cutting blade drive mechanism 22. The blade housing is driven to rotate around the vertical axis of the blade housing, the mowing blade 26 cuts the grass, and the mowing grass discharge duct 27 located above the cutting blade housing 21 by the wind generated by the rotation of the cutting blade 26. To discharge from.

  The cut grass discharged from the cut grass discharge duct 27 is transported by the wind from the cut blade 26 and the transport duct provided on the self-propelled vehicle through the pair of left and right rear wheels 2, 2 in the longitudinal direction of the vehicle body. 8 is fed into the grass collection container 32 by the guiding action by the power collecting unit 8, and is collected and stored by the grass collection container 32.

  On the other hand, in this conventional mower, in order to remove the mowing grass collection device 30, as shown in FIG. 14, the stand 70 is switched to the lowering use posture, and the pair of right and left lifting cylinders 34, 34 are shortened to collect the grass collecting container. 32 is lowered. When the front stand main body 71 and the rear stand main body 72 are grounded to the ground G and the grass collecting container 32 is supported by the ground G via the stand 70, the pair of left and right connecting / disconnecting connection pins 62, 62 are removed. The pair of left and right lifting cylinders 34 are shortened. The support cylinder 31 and the link mechanism 33 are relatively swung so that the lift cylinder 34 narrows the distance between the lower end side of the support frame 31 and the tip end side of the lower lift link 33b. Is moved backward and upward with respect to the grass collection container 32. As a result, the recovery device side connecting portion 40 moves rearward and upwardly away from the vehicle body side connecting portion 50, and the pair of left and right fixed connecting pins 61, 61 come out of the lower pin hole 52 of the support 51 and recover. The connection by the connection mechanism 60 of the apparatus side connection part 40 and the vehicle body side connection part 50 is cancelled | released, and the mowed grass collection | recovery apparatus 30 remove | deviates from a self-propelled vehicle.

JP 2009-273406 A

  However, according to the configuration of the conventional riding mower, in order to remove the grass collection container 32 from the self-propelled vehicle as the mower main body, the support frame 31 supporting the grass collection container 32 together with the self-propelled vehicle. Since it was the structure to remove, in the support frame 31 which has the part extended to the position higher than the driver's seat 3, the subject that a direction indicator etc. required at the time of driving | running | working on a road could not be attached.

  In view of such a problem of the conventional riding mower, the present invention provides a riding mower capable of attaching necessary equipment when traveling on the road to a support frame extending to a position higher than the driver's seat. Objective.

In order to solve the above problems, the first aspect of the present invention provides:
A traveling vehicle body having front and rear wheels;
A mowing unit disposed at a lower portion of the traveling vehicle body;
A grass collection container detachably connected to the rear of the traveling vehicle body;
In a riding mower equipped with
A support frame for supporting the grass collection container, which extends to a position higher than the driver seat at the rear of the traveling vehicle body;
When the grass collection container is removed from the support frame, the support frame is maintained in a state of being located at the rear portion of the traveling vehicle body ,
An elevating link mechanism having a pair of upper and lower elevating arms, which are provided on the side surface of the grass collecting container and support the grass collecting container so as to be movable up and down;
A connecting body for attaching one end of the lifting link mechanism;
The elevating link mechanism is rotatable in the vertical direction with the connecting body side as a fulcrum,
The connector is detachable from the support frame,
The connecting body is a riding mower having a fixture for supporting a rod-shaped jig used for alignment when the connecting body is connected to the support frame .

  As a result, even after the grass container is removed from the support frame, the support frame remains in the rear part of the traveling vehicle body. For example, since a direction indicator) can be attached, the effect of being easy to travel on the road is exhibited.

Thereby, the operation of connecting the grass container to the support frame can be easily performed, and even when the grass container is removed from the support frame, one end side of the lifting arm is rotatably connected to the connecting body. The effect that one end side of a pair of upper and lower lifting arms does not vary is exhibited.
In addition, this makes it possible to use the jig like a lever and pull the connecting body toward the support frame while aligning it, making it easier to hook the hook onto the positioning projection provided on the support frame. To do.

The second aspect of the present invention
The connecting body is the riding mower according to the first aspect of the present invention, wherein the connecting body includes a hook that can be fitted to a positioning positioning protrusion formed on the surface of the support frame.

  Thereby, the positioning operation | work at the time of connecting a grass container to a support frame becomes easy, and the effect that it becomes easy to attach or detach a grass container is exhibited.

The third aspect of the present invention
The coupling body includes pin coupling portions for inserting coupling pins used for coupling with the support frame at the upper and lower positions of the hook, respectively.
In the riding mower according to the second aspect of the present invention, the connection body is connected to the support frame by the connection pin penetrating the support frame via the pin connection portion.

  Accordingly, when the connecting pin is inserted into the pin connecting portion at the vertical position near the hook fitted with the positioning protrusion during connection, it can be easily inserted into the through hole formed on the support frame side. The effect is demonstrated.

The fourth aspect of the present invention is
The support frame has a square columnar support, and the connecting positioning protrusion is a cylindrical protrusion protruding from the surface of the support,
The coupling body includes a fitting portion having a U-shaped cross section that is fitted to surround the three side surfaces of the four side surfaces of the supporting portion and connected to the supporting frame. The hook is a notch provided in at least one of the U-shaped opposing surfaces,
The fixing device is a bending member having a U-shaped bending portion at the center, with both ends fixed to the upper and lower sides of the notching portion of the coupling body so as to straddle the notching portion,
When connecting the connecting body to the support frame, one end of the rod-shaped jig is inserted into the curved portion, and the one end of the rod-shaped jig is brought into contact with the side surface of the support portion of the support frame. The portion of the rod-shaped jig located between the one end and the other end is pressed against the inner peripheral surface of the bending portion while the position of the abutted side surface is used as a fulcrum. Any one of the first to third configurations, wherein the other end of the bar-shaped jig is moved in the direction of being pulled toward the vehicle body side, so that the cutout portion moves and fits toward the protrusion side. 1 is a riding mower of the present invention.

  Thereby, since the fixture is formed in an annular shape, the effect of being able to reliably support the rod-shaped jig with a simple configuration is exhibited.

  ADVANTAGE OF THE INVENTION According to this invention, the riding mower which can attach a fixture required at the time of driving | running | working on a road to the support frame extended to the position higher than a driver's seat can be provided.

Whole side view of riding mower in Embodiment 1 of the present invention The partial cross section schematic plan view of the riding mower in Embodiment 1 of this invention The side view which shows the state which has arrange | positioned the mowing grass collection | recovery apparatus behind the support frame of the riding mower in Embodiment 1 of this invention. The partial expansion perspective view for demonstrating the procedure of a connection with the support frame and connection body of a riding mower in Embodiment 1 of this invention. The side view for demonstrating the procedure of a connection with the support frame and connection body of a riding mower in Embodiment 1 of this invention. The schematic side surface for demonstrating the raising / lowering operation | movement of the grass collection container of the riding mower in Embodiment 1 of this invention The schematic side view for demonstrating the opening-and-closing operation | movement of the opening-and-closing lid of the grass collection container of the riding mower in Embodiment 1 of this invention The partial expanded perspective view for demonstrating the procedure of a connection with the support frame and connection body of a riding mower in Embodiment 2 of this invention. The partial expansion perspective view for demonstrating the procedure of a connection with the support frame and connection body of a riding mower in Embodiment 3 of this invention. The schematic perspective view which shows that the fulcrum crossing lock link in the left main support frame of Embodiment 3 of this invention is in a locked state. (A): EE 'cross-sectional view in FIG. 11 (b), (b): A procedure for connecting the support frame and the connecting body of the riding mower in the fourth embodiment of the present invention. Partial enlarged side view (A): Schematic plan view of the center discharge mower input transmission device of the riding mower in the fifth embodiment, (b): HH ′ cross-sectional view of FIG. 12 (a), (c): first Schematic plan view explaining an example in which the bevel gear case is extended and integrated with the input metal Overall side view of a conventional riding mower Side view showing how to remove and install a grass cutting device in a conventional riding mower Schematic plan view of a center discharge mower input transmission of a conventional riding mower

  Hereinafter, the configuration and operation of a riding mower according to an embodiment of the riding mower of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is an overall side view of the riding mower in the first embodiment, and FIG. 2 is a partial cross-sectional schematic plan view of the riding mower in the first embodiment.

  I. First, the configuration of the riding mower 100 according to the present embodiment will be mainly described with reference to these drawings.

  As shown in FIGS. 1 and 2, the riding mower 100 according to the present embodiment is configured to be self-propelled by a pair of left and right front wheels 122 that can be steered and a pair of right and left rear wheels 123 that can be driven. Yes.

  The riding mower 100 includes a riding-type self-propelled vehicle 116 having a driving unit equipped with a driver seat 103 at the rear of the vehicle body, and a support frame 131 fixed to the rear part of the body frame 104 of the self-propelled vehicle 116. And a grass cutting device 130 equipped with a grass collection container 132 that can be detachably connected. Further, the riding mower 100 includes a mowing device 120 that is connected between the front and rear wheels of the body frame 104 of the self-propelled vehicle 116 via a link mechanism 110.

  An example of the mowing unit of the present invention corresponds to the mowing device 120 of the present embodiment. An example of the traveling vehicle body of the present invention corresponds to the vehicle body frame 104 of the present embodiment.

  The support frame 131 connects the pair of left and right main support frames 131R and 131L disposed behind the driver's seat 103 in the vertical direction of the self-propelled vehicle 116 and the upper ends of the main support frames 131R and 131L. An abbreviation having an upper fixing frame 131a for fixing, a central fixing frame 131b for connecting and fixing the central portions of the main support frames 131R and 131L, and a lower fixing frame 131c for connecting and fixing the lower ends of the main support frames 131R and 131L. A rectangular frame is formed.

  The upper part of the support frame 131, that is, the upper part of the pair of left and right main support frames 131 </ b> R and 131 </ b> L and the upper fixed frame 131 a are configured to be higher than the driver seat 103.

  In addition, direction indicators (winkers) 133R and 133L are attached to upper ends of the pair of left and right main support frames 131R and 131L, respectively.

  Furthermore, the other structure and operation | movement of the self-propelled vehicle 116 of the riding mower 100 are demonstrated.

  That is, the self-propelled vehicle 116 as a main body of the riding mower 100 includes an engine 105 provided at the front portion of the vehicle body frame 104 and a power take-off mechanism (not shown) provided below the engine 105. The output of the engine 105 taken out by the power take-off mechanism is transmitted to the mowing device 120 via a transmission belt (not shown), a rotary transmission shaft (not shown), and the like.

  The link mechanism 110 includes a pair of left and right swing links 111 that are supported by the body frame 104 so as to be swingable up and down, and the front ends of the pair of left and right swing links 111 are located at the rear of the mowing device 120. It is connected to the connecting member 121. A lift cylinder 115, one of which is fixed below the driver seat 103, is connected to the vicinity of the tip of the swing link 111.

  The link mechanism 110 is swung up and down with respect to the vehicle body frame 104 by swinging the pair of left and right swing links 111 by the lift cylinder 115. Accordingly, the lifting operation can be performed between a lowering work state in which the support wheels 125 supporting the mowing device 120 on the front and rear sides are in contact with the ground and a non-working state in which each support wheel 125 is lifted from the ground.

  When the riding mower 100 is driven while the mowing device 120 is in the descending work state, the mowing device 120 moves the mowing blades 113 positioned side by side in the horizontal direction in the mowing blade housing 106 to the mowing blade drive shafts 101 and 102. It is driven to rotate around the shaft core, and the mowing blade 113 cuts the grass. The cut grass is discharged from the cut grass discharge duct 118 located above the rear portion of the cut blade housing 106 by the wind generated by the rotation of the cut blade 113. In addition, the cutting blades 113 arranged in the horizontal direction are rotated in the opposite directions so that the grass is efficiently cut.

  The cut grass discharged from the cut grass discharge duct 118 is conveyed by the wind from the cutting blade 113 and the transfer duct 119 provided between the pair of left and right rear wheels 123 in the front-rear direction of the self-propelled vehicle 116. It is sent to the grass collection container 132 by the guiding action, and is collected and stored by the grass collection container 132.

  Next, the configuration will be described focusing on the mowing grass recovery device 130.

  That is, as shown in FIG. 1, the mowing grass collection device 130 includes a grass collection container 132 for storing mowing grass supported by an elevating / discharging port opening / closing link 170 described later via a rotary support shaft 171, A grass cutting outlet 135 provided on the rear end side of the grass collecting container 132, an opening / closing lid 136 for opening and closing the grass cutting outlet 135, and a pair of upper and lower lifting link mechanisms 140 provided on the left and right sides of the grass collecting container 132; A lifting cylinder 150 provided on the left and right sides of the grass collection container 132, a dump cylinder 160 provided on the rear end sides of the left and right sides of the grass collection container 132 for opening and closing the opening / closing lid 136 of the grass collection container 132, and a pair of upper and lower A pair of left and right connecting members 180 (180R, 180L) for detachably connecting one end of the lifting link mechanism 140 to the support frame 131, and various hydraulic cylinders (150, 160) From the main body of the riding mower 100 for transmitting hydraulic pressure, and a hydraulic pipe system 190 having a detachable quick coupler. A dump posture fixing pin 1180a for fixing a grass discharging posture of a grass collection container 132, which will be described later, is attached to the connecting body 180.

  Further, as shown in FIG. 1, the pair of upper and lower lifting link mechanisms 140 are provided with a pair of upper and lower lifting arms 140a and 140b on the left and right side surfaces of the grass collection container 132, respectively, and the front ends of the pair of upper and lower lifting arms 140a and 140b are provided. In addition, it is connected to the connecting body 180 so as to be rotatable in the vertical direction.

  The connecting body 180 that connects the left and right lifting arms 140a and 140b respectively includes the left connecting body 180L at the upper end of the left main support frame 131L and the right connecting body 180R at the upper end of the right main support frame 131R. Are connected to each other at a position higher than the driver seat 103.

  Further, a pair of left and right lifting / discharging port opening / closing links 170 are connected to the rear ends of the pair of upper and lower lifting arms 140a and 140b on the left and right sides, so that the lifting arms 140a and 140b can be rotated up and down.

  Further, the lifting / discharging port opening / closing link 170 is fixed to the grass collection container 132 via a rotation support shaft 171 provided between the connecting positions of the lifting arms 140a and 140b and the rear ends thereof. Is rotatably supported.

  In the present embodiment, the elevating / discharging port opening / closing link 170 and the rotation support shaft 171 are collectively referred to as a connection support member.

  Further, as shown in FIG. 1, the lifting / discharging port opening / closing link 170 is rotatably connected to the end portion 160a of the cylinder body of the dump cylinder 160 on the upper end side thereof. 160b is rotatably connected to a main body subframe 132b fixed to the grass collection container 132.

  Further, as shown in FIG. 1, the lifting cylinder 150 has a piston tip portion 150 a rotatably connected to the lower surface of the lifting arm 140 b, and the cylinder body terminal portion 150 b is the lower end of the side surface of the support frame 131. It is rotatably connected to a connecting plate 151 detachably fixed to the part. The connection plate 151 can be fixed to the lifting cylinder holding plate 152 provided at the lower end of the grass collection container 132 by releasing the fixing to the support frame 131 when the mowing grass recovery device 130 is detached from the support frame 131. It is configured.

  II. Next, a procedure for attaching the mowing grass collection device 130 in the riding mower 100 according to the first embodiment will be described with reference to the drawings.

  FIG. 3 is a side view showing a state where the grass cutting device 130 is disposed behind the support frame 131 of the riding mower according to the first embodiment, and FIG. 4 shows the support of the riding mower according to the first embodiment. FIG. 10 is a partially enlarged perspective view for explaining a procedure for coupling the frame 131 and the coupling body 180.

  First, as shown in FIG. 3, the grass cutting device 130 placed on the carrier 200 movable by the front caster 201 and the rear caster 202 is disposed behind the support frame 131 of the riding mower, and the arrow Move in direction A.

  Next, referring to FIG. 4, a configuration related to the connection between the support frame 131 of the riding mower and the connection body 180 will be described, and then the connection procedure will be described.

  As shown in FIG. 4, the connection body 180L on the left side is fitted with a hollow quadrangular prism shape so as to surround the three outer peripheral surfaces of the left main support frame 131L. The member 181L is fixed. Note that the right side connecting member (not shown) has a symmetrical configuration with the connecting member 181L, and thus the description thereof is omitted.

  Further, the connecting member 181L has a notch 182 formed at the center of the side surface, and the shape of the notch 182 is a columnar protrusion provided at a corresponding position on the left main support frame 131L. The guide pin 131g is configured so that it can be fitted to the outer shape.

  An example of the connecting positioning projection of the present invention corresponds to the guide pin 131g of the present embodiment, and an example of the hook of the present invention corresponds to the notch 182 of the present embodiment.

  Further, on the side surface of the connecting member 181L, there is a fixture 183 having a U-shaped curved portion 183a whose both ends are fixed to the upper and lower sides of the notch 182 so as to straddle the notch 182. Further, a pin that can be inserted into the upper and lower portions of the notch portion 182 is provided with a set pin 137 having a removal preventing member 137a for maintaining the connected state when connected to the left main support frame 131L. Holes 181a and 181b are formed. Similar pin holes 133a and 138b are also formed at corresponding positions above and below the guide pin 131g of the left main support frame 131L.

  An example of the connecting pin of the present invention corresponds to the set pin 137 of the present embodiment, and an example of the pin connecting portion of the present invention corresponds to the pin holes 181a and 181b of the present embodiment.

  Under the above configuration, when the coupling body 180 is coupled to the support frame 131, a round bar or the tip of a Phillips screwdriver is used as the bar-shaped jig 184.

  That is, as shown in FIG. 4, one end of the rod-shaped jig 184 is inserted into the curved portion 183a of the fixture 183, and the tip of the rod-shaped jig 184 is brought into contact with the side surface of the left main support frame 131L. In this state, the other end portion of the rod-shaped jig 184 is moved in the direction in which the curved portion 183a pulls toward the self-propelled vehicle 116 using the principle of the lever with the position of the abutted side surface as a fulcrum. Since the casters 201 and 202 are attached to the lower surface of the carrier 200, the carrier 200 can be drawn smoothly.

  As a result, the notch 182 can be easily moved toward the guide pin 131g, and vertical positioning can be performed at the same time. By inserting the set pin 137 into the pin holes 181a and 181b, the connecting body 180 is attached to the support frame 131. Can be connected quickly.

  In addition, the height of the carrier 200 is appropriately adjusted in advance so that the above-described fitting can be performed smoothly, or the height on the mowing grass collection device 130 side is adjusted to be lower than the height on the support frame 131 side. May be. If it is adjusted to a lower position, when pulling the fixture 183 with the rod-shaped jig 184, it is slightly lifted upward to eliminate the misalignment and fit the notch 182 to the guide pin 131g. It can be made.

  The operation is performed in the same procedure as described above for the connection between the right connector 180R and the right main support frame 131R.

  Further, as shown in FIG. 5, the connecting plate 151 attached to the lower side surface of the mowing grass recovery device 130 removes the fixing screw 151 a, so that the elevating cylinder 150 becomes rotatable. And after moving the raising / lowering cylinder 150 to the arrow B direction, the connection plate 151 is fixed to the lower end part of the side surface of the support frame 131 with the fixing screw 151a. This operation is similarly performed on the left side and the right side.

  Next, the quick coupler of the hydraulic piping system 190 is connected to the coupler on the main body side.

  Then, a lifting operation lever (not shown) provided in the riding mower 100 is operated to slightly raise the grass collection container 132 to create a gap between the bottom surface of the grass collection container 132 and the carrier 200. Thereafter, the carrier 200 is slid rearward and removed.

  Thus, the connection work of the grass cutting device 130 is completed.

  When the mowing operation is completed and the mowing grass recovery device 130 is removed from the riding mower 100, the carrier 200 is set below the mowing grass recovery device 130 and then the operation is performed in the reverse order of the above procedure. If the removed grass cutting device 130 is stored while being placed on the carrier 200, the work becomes easier when it is next attached.

  Thus, according to the configuration of the riding mower 100 according to the present embodiment, the support frame 131 remains in the rear portion of the self-propelled vehicle 116 even after the grass collection container 132 is removed from the support frame 131. Since it is possible to attach equipment (for example, a direction indicator) necessary for traveling on the road to the support frame 131 extending to a position higher than the driver's seat 103, the effect of being easy to travel on the road is exhibited.

  In addition, since an existing tool such as a Phillips screwdriver can be used as the rod-shaped jig 184, the detachment time can be shortened (quick detachment) with inexpensive components.

  Further, the operation of connecting the grass collection container 132 to the support frame 131 can be easily performed, and even when the grass collection container 132 is detached from the support frame 131, one end side of the lifting arms 140a and 140b can be rotated to the connection body 180. Therefore, an effect that one end side of the pair of upper and lower lifting arms 140a and 140b does not vary is exhibited.

  III. Next, the raising / lowering operation | movement for the grass discharge | emission of the grass collection container 132 and the opening / closing operation | movement of the opening-and-closing lid | cover 136 are demonstrated using FIG.

  FIG. 6 is a schematic side view for explaining the raising / lowering operation of the grass collection container 132, and FIG. 7 is a schematic side view for explaining the opening / closing operation of the opening / closing lid 136 of the grass collection container 132.

  First, the raising / lowering operation | movement of the grass collection container 132 is demonstrated using FIG.

  By sliding an elevating operation lever (not shown) provided on the riding mower 100 to the ascending side, the pair of left and right elevating cylinders 150 starts to move in the extending direction. Since the end portions 150b of the cylinder bodies of the pair of left and right lifting cylinders 150 are fixed to the lower ends of the side surfaces of the pair of left and right main support frames 131L and 131R via the connecting plate 151, the piston tip 150a of the lifting cylinder 150 is The pair of left and right lifting arms 140b connected to each other and the pair of left and right lifting arms 140a connected to the lifting arms 140b via the lifting / discharging port opening / closing links 170 rise.

  On the other hand, the grass collection container 132 is rotatably supported by a pair of left and right lifting / discharging port opening / closing links 170 via a rotation support shaft 171 and is attached to the pair of left / right lifting / discharging port opening / closing links 170. Since the piston tip 160b of the pair of left and right dump cylinders 160 is rotatably connected to the main body subframe 132b of the grass collection container 132, as shown in FIG. 6 as the lifting arms 140a and 140b rise. To rise.

  Next, the opening / closing operation | movement of the opening-and-closing lid | cover 136 of the grass collection container 132 is demonstrated using FIG.

  As shown in FIG. 6, after the grass collection container 132 is raised and the raising operation is stopped at a predetermined height, the discharge opening / closing operation lever (not shown) provided in the riding mower 100 is slid to the open side. Thus, the pair of left and right dump cylinders 160 starts to move in the extending direction.

  The pair of left and right dump cylinders 160 are fixed so that the end portions 160a of the cylinder bodies are pivotably fixed to the upper end portions of the pair of left and right lifting / discharging port opening / closing links 170, respectively. Along with the extension operation of the piston tip 160b fixed to the frame 132b so as to be rotatable, the grass collection container 132 is rotated around the axial center of the rotation support shaft 171 in the lateral direction of the collection container (direction perpendicular to the paper surface of FIG. 6). Rotate in the direction of arrow C.

  On the other hand, the opening / closing lid 136 rotatably supported on the outer wall of the grass collection container 132 by the opening / closing support shaft 132c tries to rotate in the direction of arrow C along with the rotation of the grass collection container 132 by its own weight. The opening / closing support frame 172 prevents the movement. As a result, as shown in FIG. 7, the open / close lid 136 that has closed the mowing grass discharge port 135 is flipped up backward, and the mowing grass stored in the grass collecting container 132 falls by its own weight.

  Note that one end of the pair of left and right opening / closing support frames 172 is fixed to the upper end side of the pair of left / right lifting / discharging port opening / closing links 170, and the other end rotates to the inner wall of the opening / closing lid 136. It is fixed freely.

(Embodiment 2)
In the second embodiment, a modified example of the coupling mechanism between the coupling body 180 and the support frame 131 described in the first embodiment will be described with reference to FIG.

  FIG. 8 is a partially enlarged perspective view for explaining the procedure for connecting the support frame and the connecting body of the riding mower in the second embodiment.

  The riding mower 100 according to the second embodiment is the same as the riding mower 100 according to the first embodiment except for the connection mechanism between the connecting body 180 and the support frame 131, and thus the same reference numerals are given. Therefore, the description thereof will be omitted, and different configurations will be described below.

  As shown in FIG. 8, a connecting member 1181 </ b> L having a substantially U-shaped cross section is fixed to the left connecting body 1180 </ b> L in the connecting body 1180 of the present embodiment, as in FIG. 4. On the side surface of the connecting body 1180L, there is provided a dump posture fixing pin 1180a whose end is curved and protrudes in a substantially U shape. However, unlike the case of FIG. 4, the connecting member 1181L is not provided with the fixture 183 (see FIG. 4).

  In addition, since the structure of the right side coupling body (illustration omitted) is the same as the said left side among the coupling bodies 1180, description is abbreviate | omitted.

  In addition, pin holes 138a and 138b having the same configuration as in the case of FIG. 4 are provided on the left and right side surfaces of the left main support frame 1131L constituting the support frame 1131 of the present embodiment. A guide pin 1131g protrudes at the position. The guide pin 1131g is longer in the neck than the guide pin 131g, which is a cylindrical projection in the case of FIG. 4, and the tip of the projection has a hook shape so that a plate-shaped jig 1184 described later can be easily hooked. It has become.

  The configuration of the right main support frame (not shown) constituting the support frame 1131 is the same as that on the left side, and the description thereof will be omitted.

  Under the above configuration, the grass cutting device 130 placed on the carrier 200 is moved toward the rear of the riding mower 100 to connect the left connecting member 1181L and the right connecting member (not shown) to the left main support frame. In order to fit with 1131L and the right main support frame (not shown), it is moved to the connectable position in the direction of arrow D so that the guide pin 1131g is inserted to the back of the notch 182.

  Next, a plate-shaped jig 1184 whose tip is bent into a square shape and has a slit 1184a at its tip and a grip portion 1184c is formed thick, the slit 1184a is a dump posture fixing pin 1180a. The semi-circular cutout portion 1184b provided on the lower surface side of the guide pin 1131g is set so as to be hooked on the guide pin 1131g. As described above, in this embodiment, the portion of the dump posture fixing pin 1180a that is curved and protrudes in a substantially U shape is also used as a member for effectively functioning the plate-shaped jig 1184.

  The operator holds the grip portion 1184c of the set plate-shaped jig 1184 using the lever principle with the guide pin 1131g as a fulcrum while pressing the tip of the set pin 137 against the pin hole 181a (181b). When the pin hole 138a (138b) on the support frame 1131 side and the pin hole 181a (181b) on the coupling body 1180 side come to a position where the pin hole 138a (181b) on the connecting body 1180 overlaps by moving slightly up and down, the set pin 137 moves the pin hole 138a (138b). Since it can be penetrated through, the positioning at the time of insertion of the set pin 137 can be performed easily and quickly.

  After all the set pins 137 are inserted, the removal preventing member 137a is inserted into a hole 137b provided at the tip of the set pin 137.

  Note that the right side connection is also the same as the left side connection operation, and a description thereof will be omitted.

  As described above, according to the second embodiment, it is possible to easily and quickly perform the alignment when the set pin 137 is inserted.

(Embodiment 3)
In the third embodiment, a modified example of the coupling mechanism between the coupling body 180 and the support frame 131 described in the first embodiment will be described with reference to FIG.

  FIG. 9 is a partially enlarged perspective view for explaining a procedure for connecting the support frame and the connecting body of the riding mower 100 according to the third embodiment.

  The riding mower 100 according to the third embodiment is the same as the riding mower 100 according to the first embodiment except for the connection mechanism between the connecting body 180 and the support frame 131, and therefore, the same reference numerals are used. The description thereof will be omitted, and different configurations will be described below.

  As shown in FIG. 9, a substantially U-shaped guide plate 2181L is fixed to the lower end side of the side surface facing the main support frame 2131L of the left side connection body 2180L in the connection body 2180 of the present embodiment. In addition, a hook plate 2182 to which a hook bar 2181 whose tip is curved upward is fixed on the upper end surface of the coupling body 2180L so as to protrude toward the main support frame 2131L.

  In addition, since the structure of the right side connection body (illustration omitted) is the same as the said left side among the connection bodies 2180, description is abbreviate | omitted.

  On the other hand, on the left and right side surfaces of the left main support frame 2131L constituting the support frame 2131 of the present embodiment, guides are provided at positions where they can be fitted with notches 2181a provided on the guide plate 2181L on the coupling body 2180 side. A pin 2131 protrudes. Further, in the support plate 310 fixed to the side surface opposite to the side facing the coupling body 2180L among the side surfaces of the main support frame 2131L, the fulcrum crossing lock link 300 is connected by a fixing pin 2137.

  Note that the configuration of the right main support frame (not shown) constituting the support frame 2131 is the same as that on the left side, and the description thereof will be omitted.

  The over-fulcrum lock link 300 is provided with an annular hook member 306 whose length can be adjusted on the upper end side of the lock link main body 305, and a lock lever 301 that is rotatably supported by a pin 302 on its lower end side. Yes. Since the end 301b of the lock lever 301 opposite to the handle 301a is connected to the support plate 310 by the fixing pin 2137 as described above, the handle 301a of the lock lever 301 is moved in the directions of the arrows α and β. It can turn freely. When the handle portion 301a is moved in the α direction, the hook member 306 is moved upward. On the contrary, when the handle portion 301a is moved in the β direction, the hook member 306 is moved downward, and the fulcrum overlock link 300 is locked.

  Under the above configuration, the mowing grass collecting device 130 placed on the carrier 200 is moved toward the rear of the riding mower 100, and the left guide plate 2181L and the right connecting member (not shown) are moved to the left main support frame. In order to fit 2131L and the right main support frame (not shown), the guide pin 2131 is moved to the connectable position in the direction of arrow D so that the guide pin 2131 is inserted to the back of the notch 2181a.

  Next, the hook member 2306 is hooked on the hook bar 2181 protruding from the upper end of the left main support frame 2131L, and the handle portion 301a of the lock lever is pulled down in the β direction.

  As a result, as shown in FIG. 10, the annular hooking member 306 is pulled downward while being hooked on the hook bar 2181 whose tip is curved upward, and the fulcrum overlock link 300 is locked. FIG. 10 is a schematic perspective view showing that the fulcrum crossing lock link 300 in the left main support frame 2131L is in a locked state.

  Note that the right side connection is also the same as the left side connection operation, and a description thereof will be omitted.

  As described above, according to the third embodiment, since it is not necessary to insert the set pins 137 at the upper and lower two positions on the left and right, the pin hole is not required to be aligned, and the lock lever 301 can be easily operated by one-touch operation. Demonstrates the effect of being able to lock securely.

(Embodiment 4)
In the fourth embodiment, a modified example of the coupling mechanism between the coupling body 180 and the support frame 131 described in the first embodiment will be described with reference to FIGS.

  FIG.11 (b) is a partial expanded side view for demonstrating the connection procedure of the support frame and connection body of the riding mower 100 in this Embodiment 4, FIG.11 (a) is FIG. It is EE 'sectional drawing in b).

  Since the riding mower 100 according to the fourth embodiment is the same as the riding mower 100 according to the first embodiment except for the connection mechanism between the connecting body 180 and the support frame 131, the same reference numerals are used. The description thereof will be omitted, and different configurations will be described below.

  As shown in FIGS. 11A and 11B, the connecting member 3180 </ b> L on the left side of the connecting body 3180 of the present embodiment has a substantially U-shaped cross section as in FIG. 4. 3181L is fixed. However, unlike the case of FIG. 4, the connecting member 3181L is not provided with the fixture 183 (see FIG. 4), but notches 3182a and 3182b are formed at the upper and lower positions on both side surfaces thereof. A lock pin 3131r protrudes between the notches 3182a and 3182b.

  In addition, since the structure of the right side connection body (illustration omitted) is the same as the said left side among the connection bodies 3180, description is abbreviate | omitted.

  Further, on both left and right side surfaces of the left main support frame 3131L constituting the support frame 3131 of the present embodiment, guide pins are provided at positions where they can be fitted to the notches 3182a and 3182b formed on the left connecting member 3181L. 3131ga and 3131gb protrude.

  Note that the configuration of the right main support frame (not shown) constituting the support frame 3131 is the same as that on the left side, and the description thereof will be omitted.

  Further, in the present embodiment, a pair of left and right connection lock members 3200 are provided in order to connect and lock the connection body 3180 to the support frame 3131.

  As shown in FIG. 11, the connection lock member 3200 includes a hook member 3210 having a substantially U-shaped cross section in which cutout portions 3211 for hooking lock pins 3181r protruding from both side surfaces of the left connection member 3181L are formed. The hook member 3210 includes a nut portion 3220 fixed corresponding to a through-hole 3212 formed in the center portion of the hook member 3210 and a tightening bolt 3230 screwed into the nut portion 3220.

  In addition, a through hole 3231 formed on one end side of the tightening bolt 3230 is provided with a lock handle 3240 that is movably attached in the through hole, and an operator turns the lock handle 3240 clockwise. By rotating, the tip 3230a of the tightening bolt 3230 advances in the direction of arrow F, and by rotating counterclockwise, it advances in the direction opposite to the direction of arrow F.

  Further, at both ends of the lock handle 3240, there are provided removal prevention portions 3241 for preventing the lock handle 3240 from falling out of the through holes 3231, and a surface 3240a of the lock handle 3240 adjacent to the removal prevention portion 3241, The resin material is molded in 3240b in order to tightly fit the through hole 3231.

  Under the above configuration, the grass cutting device 130 placed on the carrier 200 is moved toward the rear of the riding mower 100, and the left connecting member 3181L and the right connecting member (not shown) are connected to the left main support frame. The guide pins 3131ga and 3131gb are inserted to the back of the notches 3182a and 3182b by being moved to a connectable position in order to be fitted to 3131L and the right main support frame (not shown).

  Next, the operator hooks the left and right cutout portions 3211 formed in the hook member 3210 of the connection lock member 3200 on the lock pins 3181r formed on the left and right side surfaces of the left connection member 3181L, and the lock handle 3240 is moved. Rotate clockwise.

  As a result, the distal end portion 3230a of the tightening bolt 3230 advances in the direction of the arrow F, and comes into strong contact with the side surface of the left main support frame 3131L. The left connecting member 3181L is strongly attracted to the left main support frame 3131L, and as a result, both the connected states are locked.

  After locking, it is preferable to slide the lock handle 3240 in the direction of arrow G so that the lock handle 3240 always protrudes inward as shown in FIG.

  The connection on the right side is the same as the connection operation on the left side, and a description thereof will be omitted.

  As described above, according to the fourth embodiment, since it is not necessary to insert the set pins 137 at the upper and lower positions on the left and right, the pin holes need not be aligned, and the operation can be ensured only by operating the connecting lock member 3200. Demonstrates the effect of being able to lock.

  Since both the lock lever 301 of FIG. 9 and the lock handle 3240 of FIG.

(Embodiment 5)
Next, an embodiment of the invention relating to the center discharge mower input transmission device, which is an invention related to the riding mower of the present invention, will be described.

  FIG. 15 is a schematic plan view of a center discharge mower input transmission device 400 of a conventional riding mower.

  As shown in FIG. 15, the center discharge mower input transmission device 400 transmits the power from the engine (not shown) via the universal joint 410 and the rotational force from the output metal 411 to the input metal 412. The transmission belt 413 and the output from the input metal 412 are input to the first rotation shaft 421 for rotating the first blade for mowing (not shown), and the second blade for mowing A first bevel gear case 420 that outputs power for rotating (not shown), a second bevel gear case 430 that rotates the second blade for mowing using the output from the first bevel gear case 420 as input, A mower deck 440 for storing the first and second blades and a cut grass discharge duct 450; .

  By the way, in order to smoothly transmit the rotational force from the input metal 412 to the first bevel gear case 420, in the assembly process at the time of manufacturing the center discharge mower input transmission device 400, the axis of the output side shaft 412a of the input metal 412 And the first coupling 460 after shim adjustment for centering with the input side shaft core of the first bevel gear case 420.

  Further, in the assembly process for connecting the first bevel gear case 420 and the second bevel gear case 430, the shim adjustment for the centering of the shaft core is performed in the same manner as described above, and the second and third couplings 461 and 462 are used. It is connected.

  However, shim adjustment in the above-described conventional apparatus is a task with difficulty, and there is a problem that the transmission cover becomes large.

  A center discharge mower input transmission device 500 for a riding mower according to the present embodiment shown in FIGS. 12A and 12B solves the problems of the conventional device.

  FIG. 12A is a schematic plan view of the center discharge mower input transmission device 500 of the riding mower according to the present embodiment, and FIG. 12B is a cross-sectional view taken along the line HH ′ of FIG. FIG.

  In FIG. 12, the same components as those in FIG. 15 are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIGS. 12A and 12B, the center discharge mower input transmission device 500 of the riding mower according to the present embodiment has a first integral shaft 510 between the input metal 4412 and the first bevel gear case 4420. The first centering connection pipe 520 that also serves as a shaft cover is provided on the outer periphery of the first bevel gear case 4420 and the second bevel gear case 4430. The second centering connecting pipe 521 that also serves as a shaft cover is provided on the outer periphery thereof.

  In addition, the relationship between the second integral shaft 511 and the second centering connection pipe 521 is as shown in FIG. 12 (b), and both ends of the second integral shaft 511 are connected to the first and second bevel gear cases 4420, The inner periphery of 4430 is press-fitted through an O-ring 530. In addition, a first bevel gear 4421 and a second bevel gear 4431 are inserted into both ends of the second integral shaft 511, and are rotatably supported by bearings 4422 and 4432, respectively.

  The relationship between the first integral shaft 510 and the first centering connection pipe 520 is the same as that described with reference to FIG.

  From the above, according to the configuration of the center discharge mower input transmission device 500 of the riding mower of the present embodiment, the input to the bevel gear case is configured by a single shaft and a centering connection pipe. Shim adjustment is unnecessary or easy, and the number of parts can be reduced, so that the cost can be reduced. Moreover, since a transmission part cover can be made small, weight reduction can be achieved.

  Further, as shown in FIG. 12C, the first bevel gear case 4420 is extended and integrated with the input metal 4412 so that the first gear having both the first bevel gear case portion 4420 ′ and the input metal portion 4412 ′. Case 4500 may be configured. According to this configuration, shim adjustment is not necessary.

  In the above embodiment, the case where the direction indicator is provided on the support frame as the equipment necessary for the road traveling has been described. However, the present invention is not limited thereto, and any equipment may be used as long as the equipment is necessary for the road traveling. For example, a brake lamp may be used.

  Moreover, although the said embodiment demonstrated the case where the raising / lowering cylinder 150 and the dump cylinder 160 were provided in the left-right pair, it is not restricted to this, For example, either one cylinder is provided only in one side. It may be a configuration.

  In the fifth embodiment, the first metal shaft 510 is transmitted between the input metal 4412 and the first bevel gear case 4420, and a first centering connecting pipe 520 that also serves as a shaft cover is provided on the outer periphery thereof. In addition, the case where the first bevel gear case 4420 and the second bevel gear case 4430 are transmitted by the second integral shaft 511 and the second centering connecting pipe 521 that also serves as the shaft cover is provided on the outer periphery has been described. Not limited to this, for example, any one of the connection parts, that is, only one of the connection part corresponding to the first centering connection pipe 520 and the connection part corresponding to the second centering connection pipe 521, You may comprise with one shaft and a centering connection pipe.

  The riding mower according to the present invention has the effect that it is possible to attach necessary equipment when traveling on the road to a support frame extending to a position higher than the driver's seat, and mowing or mowing the grass. It is useful as a machine.

DESCRIPTION OF SYMBOLS 100 Passenger mower 103 Driver's seat 104 Body frame 120 Mowing device 122 Front wheel 123 Rear wheel 130 Mowing grass collection device 131 Support frame 132 Grass collecting container 140 Lifting link mechanism 180 Connection body

Claims (4)

A traveling vehicle body having front and rear wheels;
A mowing unit disposed at a lower portion of the traveling vehicle body;
A grass collection container detachably connected to the rear of the traveling vehicle body;
In a riding mower equipped with
A support frame for supporting the grass collection container, which extends to a position higher than the driver seat at the rear of the traveling vehicle body;
When the grass collection container is removed from the support frame, the support frame is maintained in a state of being located at the rear portion of the traveling vehicle body,
An elevating link mechanism having a pair of upper and lower elevating arms, which are provided on the side surface of the grass collecting container and support the grass collecting container so as to be movable up and down;
A connecting body for attaching one end of the lifting link mechanism;
The elevating link mechanism is rotatable in the vertical direction with the connecting body side as a fulcrum,
The connector is detachable from the support frame,
The coupling body, said that the connecting member has a fixture for supporting the rod-shaped jig to be used for positioning when connected to the support frame, mowing machine ride. 2. The riding mower according to claim 1 , wherein the connection body includes a hook that can be fitted to a connection positioning protrusion formed on a surface of the support frame. The coupling body includes pin coupling portions for inserting coupling pins used for coupling with the support frame at the upper and lower positions of the hook, respectively.
The riding mower according to claim 2 , wherein the connection body is connected to the support frame by the connection pin penetrating the support frame via the pin connection portion. The support frame has a square columnar support, and the connecting positioning protrusion is a cylindrical protrusion protruding from the surface of the support,
The coupling body includes a fitting portion having a U-shaped cross section that is fitted to surround the three side surfaces of the four side surfaces of the supporting portion and connected to the supporting frame. The hook is a notch provided in at least one of the U-shaped opposing surfaces,
The fixing device is a bending member having a U-shaped bending portion at the center, with both ends fixed to the upper and lower sides of the notching portion of the coupling body so as to straddle the notching portion,
When connecting the connecting body to the support frame, one end of the rod-shaped jig is inserted into the curved portion, and the one end of the rod-shaped jig is brought into contact with the side surface of the support portion of the support frame. The portion of the rod-shaped jig located between the one end and the other end is pressed against the inner peripheral surface of the bending portion while the position of the abutted side surface is used as a fulcrum. by moving the other end of the rod-shaped jig in a direction to be attracted to the vehicle body, wherein the notch is configured to fit to move toward the protrusion side, any one of claims 1 to 3 The riding mower described in 1.

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